Seismic Reflection/Refraction Data at the Academic Seismic Portal
Expeditions / Compilations
Processed
Raw
Acquisition Information
Processed Data Sets
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Processed multichannel seismic data collected off Taiwan, acquired during the R/V Maurice Ewing survey EW9509 (1995)
Locale
File Format
ASCII
Quality
2
Ocean bottom seismometer (OBS) data around Taiwan, deployed by the R/V Ocean Researcher I survey ORI429 for acquisition during R/V Maurice Ewing EW9509 (1995)
Platform Info
Array:Ocean Researcher 1
NTU
Device Info
Seismic: OBS
Locale
File Format
ASCII
Quality
2
Nakamura, Yosio
UTIG
Wang and Chiang, 1998
Wang et al., 2001
Seismic:Reflection:MCS
Data DOI:
10.1594/IEDA/500138
Processed multichannel seismic data collected off Taiwan, acquired during the R/V Maurice Ewing survey EW9509 (1995)
Locale
File Format
SEGY
Quality
2
Processed multichannel seismic data collected off Taiwan, acquired during the R/V Maurice Ewing survey EW9509 (1995)
Locale
File Format
PDF
Quality
2
Seismic:WideAngle:OBS
Data DOI:
10.1594/IEDA/500149
Ocean bottom seismometer (OBS) data around Taiwan, deployed by the R/V Ocean Researcher I survey ORI429 for acquisition during R/V Maurice Ewing EW9509 (1995)
Platform Info
Array:Ocean Researcher 1
NTU
Device Info
Seismic: OBS
Locale
File Format
SEGY
Quality
2
Nakamura, Yosio
UTIG
Wang and Chiang, 1998
Wang et al., 2001
Ocean bottom seismometer (OBS) data around Taiwan, deployed by the R/V Ocean Researcher I survey ORI429 for acquisition during R/V Maurice Ewing EW9509 (1995)
Platform Info
Array:Ocean Researcher 1
NTU
Device Info
Seismic: OBS
Locale
File Format
PDF
Quality
2
Nakamura, Yosio
UTIG
Wang and Chiang, 1998
Wang et al., 2001
Raw Data Sets
Sort by:
Multi-Channel Seismic Data from the Philippine Sea (Western) acquired during the Maurice Ewing expedition EW9509 (1995)
Locale
PhilippineSea:Western
Sea
File Format
ASCII
Quality
0
Reed, Don
San Jose State University
Liu, Char-Shine
NTU
Seismic:Reflection:MCS
Data DOI:
10.1594/IEDA/309962
Raw Multi-Channel Seismic Shot Data from the Western Philippine Sea acquired during R/V Maurice Ewing expedition EW9509 (1995)
Locale
PhilippineSea:Western
Sea
File Format
SEGY
Quality
0
Reed, Don
San Jose State University
Liu, Char-Shine
NTU
Event Logs
Device Info
Seismic: OBS
Platform: Ocean Researcher 1 (Array)
McIntosh, Kirk
Seismic Acquisition Parameters
edu.utexas.ig:ori429_acq001 (Lines: )
Source Information
NotApplicable
Receiver Information
NotApplicable
Used Active Tail Buoy: false
Used Compass Birds: false
Nav System
R/V Ewing GPS system
WGS84
Acquisition System
Digital
Name: none
Details
Receiver Type: Seismometer_OceanBottom
Source Type: null
Acquisition System Name: none
Acquisition System Type: digital
Seismic Nav System: R/V Ewing GPS system
Survey Datum: WGS84
Source to Near Channel (m): none
Antenna to Source (m): null
Number of Channels Recorded: none
Channel Length (m): none
Cable Receiver Depth (m): none
Source Volume (cubicInches): undocumented; on Ewing
Source Pressure (bars): null
Source Number: null
Source Depth (m): null
Shot Control: null
Shot Interval (s or m): null
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no
Event Logs
Device Info
Seismic: MCS
LDEO
Platform: Maurice Ewing (Array)
Reed, Don
San Jose State University
Seismic Acquisition Parameters
EW9509_ACQ001 (Lines: Lines 01,03,23-35)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8425
Pressure (psi): 2000
Shot Interval (sec): 20
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 160
Channels Recorded: 160
Group Spacing (m): 25
Cable Length (m): 4000
Near Channel Number: 160
Nav System
GPS
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16.384
Details
Shot Sequence and time in headers do not match up with the shot/time entries in the ts.n files
Dates/times are zero for lines 01 (all), 03, 19, 19a, 23, 24, 29
LDEO has no additional information that would allow matching navigation with shots
LDEO has no information about source-receiver offset
There are no msecs in the headers. It is possible that the time is from the original SEGD general header which may differ from the true time
For some lines shot number is reset to 1 in the middle of the line
Lines 01, 03, 19, 19a, 21-24 were flagged as IBM Floating Point
Lines 20b, 25-49 were flagged as IEEE Floating Point
Line 28b contained only a partial trace after shot 138, trace 40. It is assumed to be incomplete.
EW9509_ACQ002 (Lines: Lines 19-22)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8425
Pressure (psi): 2000
Shot Interval (sec): 20
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 156
Channels Recorded: 156
Group Spacing (m): 25
Cable Length (m): 4000
Near Channel Number: 156
Nav System
GPS
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16.384
Details
See ACQ_001
EW9509_ACQ003 (Lines: Lines 45-48)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8425
Pressure (psi): 2000
Shot Interval (sec): 20
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 144
Channels Recorded: 144
Group Spacing (m): 25
Cable Length (m): 4000
Near Channel Number: 144
Nav System
GPS
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16.384
Details
See ACQ_001
EW9509_ACQ004 (Lines: Line 49 only)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8425
Pressure (psi): 2000
Shot Interval (sec): 20
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 128
Channels Recorded: 128
Group Spacing (m): 25
Near Channel Number: 128
Nav System
GPS
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16.384
Details
See ACQ_001
EW9509_ACQ005 (Lines: Lines 2,4-18,36-44)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8425
Pressure (psi): 2000
Shot Interval (sec): 20
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Group Spacing (m): 25
Nav System
GPS
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16.384
Details
See ACQ_001
edu.utexas.ig:ew9509_acq001 (Lines: )
Source Information
AirGun
Receiver Information
Hydrophone:Streamer
Used Active Tail Buoy: false
Used Compass Birds: false
Nav System
differential GPS using data received simultaneously onboard the R/V <i>Ewing</i> and at a base station at the National Taiwan University
WGS84
Acquisition System
Digital
Name: Reftek recorders<br>Kinematrics K2 recorders
Details
Receiver Type: Hydrophone_Streamer
Source Type: SeismicSource_Gun_Air
Acquisition System Name: Reftek recorders<br>Kinematrics K2 recorders
Acquisition System Type: digital
Seismic Nav System: differential GPS using data received simultaneously onboard the R/V <i>Ewing</i> and at a base station at the National Taiwan University
Survey Datum: WGS84
Source to Near Channel (m): null
Antenna to Source (m): null
Number of Channels Recorded: 160
Channel Length (m): 25
Cable Receiver Depth (m): null
Source Volume (cubicInches): 8425
Source Pressure (bars): null
Source Number: 20
Source Depth (m): null
Shot Control: time
Shot Interval (s or m): 20
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no
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